CN107243187A - A kind of demister for nicotinic acids exports Synergistic structure and its operation method - Google Patents
A kind of demister for nicotinic acids exports Synergistic structure and its operation method Download PDFInfo
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- CN107243187A CN107243187A CN201710434039.8A CN201710434039A CN107243187A CN 107243187 A CN107243187 A CN 107243187A CN 201710434039 A CN201710434039 A CN 201710434039A CN 107243187 A CN107243187 A CN 107243187A
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- cylinder
- flue gas
- detention layer
- demister
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
- B01D45/06—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by reversal of direction of flow
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The present invention provides a kind of demister for nicotinic acids and exports Synergistic structure and its operation method, and its simple for production, operation is easy to operate, economy.Cylinder is hollow taper；Cylinder import and demister outlet, cartridge outlet and tower top chimney inlet communication；Detention layer is fixed in cylinder by flowing bar；Detention layer is the shape of conical cap；Stream bar is radially distributed between detention layer and cylinder；Flow blocking strip is surround along cylinder inboard wall.Flue gas into detention layer is collected in the presence of detention layer and gathered, and flue gas rapid divergence is gone out again by smoke hole；Flue gas into flue gas flow channel is under the current balance function of stream bar, the partial fume of the change flow direction come out again with smoke hole collects shock, while slow down this part rapid flow flue gas to the impact of cylinder inboard wall, assemble after the secondary sharp impacts of droplet carried secretly in flue gas；The drop become larger falls to coming back in desulfurizing tower again under the interception function of impermeable barrier.
Description
Technical field
Synergistic structure and its operation method are exported the present invention relates to a kind of demister for nicotinic acids.
Background technology
Thermal power plant's large-sized unit wet desulfurization flue gas is typically by the discharge of corrosion-resistant concrete chimney, and the small unit of steam power plant is wet
Investment and operating cost are considered in method desulfurization, tower top chimney, combustion can be set that is, at the top of desulfurizing tower by the way of nicotinic acids
Flue-gas is directly discharged after passing through spray+demisting, as shown in the Chinese patent of Application No. 201210070220.2.
When the smoke dust discharge concentration that location need not be performed in " 50355 " minimum discharge standard is controlled in 5mg/Nm3
Hereinafter, control is only needed in 10 mg/Nm3Within when, avoid the need for setting up wet-esp after desulfurization or efficiently remove
Day with fog.Therefore when small generator set desulfurization tower import dust concentration is less than 15mg/Nm3, 10mg/Nm need to be only maintained at by exporting dust concentration3
Within when, existing market environment is badly in need of the demisting depositing dust Synergistic technique that a kind of effective, economy is simply to nicotinic acids.
The content of the invention
It is an object of the invention to overcome above shortcomings in the prior art, and provide a kind of reasonable in design, making
Easy to operate, the economic demister for nicotinic acids of easy, operation exports Synergistic structure and its operation method,
The present invention the used technical scheme that solves the above problems is：A kind of demister for nicotinic acids exports synergy knot
With tower top chimney at the top of structure, including desulfurizing tower；Demister is installed at the top of desulfurizing tower；It is characterized in that：Also include synergy to fill
Put；Enhancing device is arranged at the top of desulfurizing tower between tower top chimney；Enhancing device include impermeable barrier, stream bar, detention layer and
Cylinder；Cylinder is hollow taper, and its top is cartridge outlet, and bottom is cylinder import；Cylinder import and the outlet of demister
Connection, the inlet communication of cartridge outlet and tower top chimney；Detention layer is fixed in cylinder by flowing bar, and it is located at cylinder import
Top；Detention layer is to be provided with smoke hole on the shape of conical cap, detention layer；The bottom surface of detention layer constitutes detention layer import,
Smoke hole and detention layer inlet communication；Stream bar is many, is radially distributed between detention layer and cylinder；Adjacent two
The gap flowed between bar forms flue gas flow channel；Impermeable barrier is fixed in cylinder, and it is made up of flow blocking strip, and flow blocking strip is along cylinder inboard wall
It surround and causes impermeable barrier in a ring；Flow blocking strip is made up of two side wings, and this two side wings are fixed together, and wherein a line wing is consolidated
It is scheduled on cylinder inboard wall, the another a line wing is set down；Impermeable barrier is located at the lower section with cartridge outlet, choked flow above stream bar
Lower section of the hole position above detention layer with cartridge outlet in the middle part of layer.
Diameter at the top of the diameter and cylinder of detention layer bottom surface of the present invention is consistent.
Between cylinder inboard wall and horizontal plane of the present invention angle and detention layer coning angle and be 180 degree.
The cross section of flow blocking strip of the present invention is " ┐ " shape.
Two side wings of flow blocking strip of the present invention are mutually perpendicular to.
Flow blocking strip of the present invention uses angle steel, or is welded with two blocks of 90 degree of steel plates.
Cylinder of the present invention, stream bar, the surface of flow blocking strip are provided with anticorrosive coat.
Diameter at the top of the diameter and cylinder of detention layer bottom surface of the present invention is 3300mm；Detention layer bottom surface and cylinder body bottom
The distance between be 2000mm；The distance of impermeable barrier outward flange and cartridge outlet is 3000mm.
A kind of demister for nicotinic acids exports the operation method of Synergistic structure, it is characterised in that：Flue gas is from demisting
Device outlet is entered after cylinder by cylinder import, and part of smoke enters detention layer, and another part flue gas enters flue gas flow channel；
Flue gas into detention layer is collected in the presence of detention layer and gathered, and is again gone out flue gas rapid divergence by smoke hole
Go；On the one hand detention layer reduces circulation area so that the droplet carried secretly in flue gas occurs to assemble after sharp impacts, then by weight
Power effect falls to coming back in desulfurizing tower along detention layer, has on the other hand upset flow field, has rapidly changed partial fume
Flow direction；
Flue gas into flue gas flow channel is under the current balance function of stream bar, the part cigarette of the change flow direction come out again with smoke hole
Gas collects shock, while slow down this part rapid flow flue gas to the impact of cylinder inboard wall, the small liquid carried secretly in flue gas
Drip after secondary sharp impacts assemble, and along cylinder inboard wall shrink and on；By secondary sharp impacts, the drop become larger exists
Under the interception function of impermeable barrier, fall to coming back in desulfurizing tower again.
Cylinder import flue gas flow rate control of the present invention is within 4m/s, and cartridge outlet flue gas flow rate is controlled in 15m/s, cylinder
Inside smoke flow velocity is between 4~15m/s.
The present invention compared with prior art, with advantages below and effect：Set at the top of desulfurizing tower between tower top chimney
Enhancing device is put, flue gas flow direction is rapidly changed by disturbing flow field, part range, droplet content in flue gas can be further reduced,
So as to control the dust content carried secretly in drop, it is less than 15mg/Nm in desulfurizing tower import dust concentration3When, it is ensured that tower top chimney
Locate dust emission concentration in 10 mg/Nm3Within.
Brief description of the drawings
Fig. 1 is that arrow show flue gas flow direction direction in the structural representation of the embodiment of the present invention, figure.
Fig. 2 is that arrow show flue gas flow direction direction in the structural representation of enhancing device of the embodiment of the present invention, figure.
Fig. 3 is Fig. 2 H-H cross section structure diagrams.
Fig. 4 is Fig. 2 J-J cross section structure diagrams.
Embodiment
Below in conjunction with the accompanying drawings and the present invention is described in further detail by embodiment, following examples are to this hair
Bright explanation and the invention is not limited in following examples.
Referring to Fig. 1-Fig. 4, the demister outlet Synergistic structure that the embodiment of the present invention is used for nicotinic acids includes desulfurization tower top
Portion 1, enhancing device 2 and tower top chimney 3.
Demister 4 is installed in 1 at the top of desulfurizing tower.Demister 4 is traditional tubular type+ridge type demister, the present embodiment
In, using+three layers of ridge type demister of one layer of tubular type.
Enhancing device 2 is arranged at the top of desulfurizing tower between 1 and tower top chimney 3.
Enhancing device 2 includes impermeable barrier 5, stream bar 6, detention layer 7 and cylinder 8.
Cylinder 8 is hollow taper, and its top is cartridge outlet, and bottom is cylinder import.Cylinder import and demister 4
Outlet, the inlet communication of cartridge outlet and tower top chimney 3.The material of cylinder 8 is carbon steel, and surface is provided with anticorrosive coat, anti-corrosion
Layer uses glass flake, 4 ± 0.2mm of anticorrosive coat thickness.
Detention layer 7 is fixed in cylinder 8 by flowing bar 6, and it is located above cylinder import.Detention layer 7 is conical cap
Uniformly smoke hole 9, percent opening 50% are provided with the shape of son, detention layer 7.The bottom surface of detention layer 7 constitutes detention layer import, flue gas
Hole and detention layer inlet communication.The diameter E of the bottom surface of detention layer 7 and the diameter D at the top of cylinder 8 are consistent, the bottom surface of detention layer 7
The diameter E and diameter D at the top of cylinder 8 is 3300mm.The distance between the bottom surface of detention layer 7 and the import of cylinder 8 F are according to viscous flow
The flue gas flow rate in 7 bottom surface section of layer determines, the flow velocity selection 5m/s in detention layer 7 bottom surface section or so, the bottom surface of detention layer 7 with
The distance between the import of cylinder 8 F is 2000mm.The axis of detention layer 7 is consistent with the axis of cylinder 8.
Stream bar 6 is radially distributed between detention layer 7 and cylinder 8, totally eight.Adjacent two stream bar 6 between
Gap forms flue gas flow channel 11.Adjacent two angles flowed between bar 6 are 45 degree.Stream bar 6 is made of round steel, is played
The effect of stream flue gas and support detention layer 7.
Detention layer 7 uses 1.4529 materials, thickness 4mm.Stream bar 6 material is carbon steel, and surface is provided with anticorrosive coat, anti-corrosion
Layer uses glass flake, 4 ± 0.2mm of anticorrosive coat thickness.
Between the inwall of cylinder 8 and horizontal plane included angle A and the coning angle of detention layer 7 C's and be 180 degree, its inwall of middle cylinder body 8 with
Included angle A is 80 degree between horizontal plane, and the coning angle C of detention layer 7 is 100 degree.
Impermeable barrier 5 is fixed in cylinder 8, and it is made up of flow blocking strip 10, and flow blocking strip 10 causes choked flow along the inner wall surrounding of cylinder 8
Layer 5 is in a ring.Flow blocking strip 10 is made up of two side wings, and the wherein a line wing of flow blocking strip 10 is fixed on the inwall of cylinder 8, another
The bar side wing is set down, can so be played a part of intercepting flue gas drop, be prevented flue gas drop from fleeing upwards again.Flow blocking strip
The 10 side wing being fixed on the inwall of cylinder 8 is vertical with the inwall of cylinder 8.The cross section of flow blocking strip 10 is " ┐ " shape.Impermeable barrier 5
Positioned at the top of stream bar 6 and the lower section of cartridge outlet, the hole position at the middle part of impermeable barrier 5 is under the top of detention layer 7 and cartridge outlet
Side.Because impermeable barrier 5 is annular, by loop configuration, the middle part of impermeable barrier 5 is hole.Two side wings of flow blocking strip 10
It is mutually perpendicular to.
Impermeable barrier 5 and cartridge outlet apart from G are determined according to the flow velocity of choked flow layer cross section flue gas, 5 sections of impermeable barrier
Flow velocity selection 8.5m/s of face flue gas or so, impermeable barrier 5 is 3000mm apart from G with cartridge outlet.
Flow blocking strip 10 or is welded using the angle steel of the form of L200 × 200 × 14 with two blocks of 90 degree of 14mm steel plates.
The material of flow blocking strip 10 is carbon steel, and surface is provided with anticorrosive coat, and anticorrosive coat uses glass flake, 4 ± 0.2mm of anticorrosive coat thickness.
A kind of claim is used for the operation method of the demister outlet Synergistic structure of nicotinic acids：
Flue gas is entered after cylinder 8 from the outlet of demister 4 by cylinder import, and part of smoke enters detention layer 7, another part cigarette
Gas enters flue gas flow channel 11；Flow velocity gradually increases, when increasing to 5m/s or so, and the flue gas into detention layer 7 is in detention layer 7
It is collected and gathers under effect, flue gas rapid divergence is gone out again by smoke hole 9.On the one hand detention layer 7 reduces circulation area, makes
Obtain the droplet carried secretly in flue gas to occur to assemble after sharp impacts, then fall to coming back to along detention layer 7 by Action of Gravity Field
In desulfurizing tower, flow field has on the other hand been upset, the flow direction of partial fume is rapidly changed.
Flue gas into flue gas flow channel 11, uniformly into 8 equal portions, goes out with smoke hole 9 again under the current balance function of stream bar 6
The partial fume for the change flow direction come collects shock, slow down this part rapid flow flue gas to the impact of the inwall of cylinder 8
Meanwhile, after the secondary sharp impacts of droplet carried secretly in flue gas assemble, and along the inwall of cylinder 8 shrink and on.By secondary play
Strong collision, the drop become larger falls to coming back in desulfurizing tower again under the interception function of impermeable barrier 5.
Handled by above-mentioned two steps Synergistic, can effectively change the content of drop in flue gas.
Cylinder import flue gas flow rate is controlled within 4m/s, and cartridge outlet flue gas flow rate is controlled in 15m/s, inner barrel cigarette
Gas velocity is between 4~15m/s, and flow velocity keeps cumulative trend.
To sum up, the present embodiment is less than 15mg/Nm in desulfurizing tower import dust concentration3When, increase synergy after demister 4
Device 2, it is ensured that tower top dust emission concentration is in 10 mg/Nm3Within.
Above content described in this specification is only to structure example explanation of the present invention；Moreover, this hair
The title that bright each several part is taken can also be different, what all construction, feature and principles according to described in inventional idea of the present invention were done etc.
In effect or simple change, the protection domain for being included in patent of the present invention.
Claims (10)
1. a kind of demister for nicotinic acids is exported at the top of Synergistic structure, including desulfurizing tower and tower top chimney；Desulfurization tower top
Demister is installed in portion；It is characterized in that：Also include enhancing device；Enhancing device is arranged at the top of desulfurizing tower and tower top chimney
Between；Enhancing device includes impermeable barrier, stream bar, detention layer and cylinder；Cylinder is hollow taper, and its top goes out for cylinder
Mouthful, bottom is cylinder import；Cylinder import and the outlet of demister, the inlet communication of cartridge outlet and tower top chimney；It is stagnant
Fluid layer is fixed in cylinder by flowing bar, and it is located above cylinder import；Detention layer is the shape of conical cap, detention layer
On be provided with smoke hole；The bottom surface of detention layer constitutes detention layer import, smoke hole and detention layer inlet communication；Stream bar is many,
Radially it is distributed between detention layer and cylinder；Adjacent two gaps flowed between bar form flue gas flow channel；Impermeable barrier is consolidated
It is scheduled in cylinder, it is made up of flow blocking strip, flow blocking strip is surround along cylinder inboard wall causes impermeable barrier in a ring；Flow blocking strip is by two sides
The wing is constituted, and this two side wings are fixed together, and the wherein a line wing is fixed on cylinder inboard wall, and the another a line wing is set down；
Hole position in the middle part of lower section of the impermeable barrier above stream bar with cartridge outlet, impermeable barrier is in detention layer top and cartridge outlet
Lower section.
2. the demister according to claim 1 for nicotinic acids exports Synergistic structure, it is characterised in that：Detention layer bottom
Diameter at the top of the diameter and cylinder in face is consistent.
3. the demister according to claim 1 for nicotinic acids exports Synergistic structure, it is characterised in that：Cylinder inboard wall
Between horizontal plane angle and detention layer coning angle and be 180 degree.
4. the demister according to claim 1 for nicotinic acids exports Synergistic structure, it is characterised in that：Described resistance
The cross section for flowing bar is " ┐ " shape.
5. the demister according to claim 1 for nicotinic acids exports Synergistic structure, it is characterised in that：Described resistance
Two side wings of stream bar are mutually perpendicular to.
6. the demister according to claim 5 for nicotinic acids exports Synergistic structure, it is characterised in that：Described resistance
Strip adoption angle steel is flowed, or is welded with two blocks of 90 degree of steel plates.
7. the demister according to claim 1 for nicotinic acids exports Synergistic structure, it is characterised in that：Described cylinder
Body, stream bar, the surface of flow blocking strip are provided with anticorrosive coat.
8. the demister according to claim 1 for nicotinic acids exports Synergistic structure, it is characterised in that：Detention layer bottom
Diameter at the top of the diameter and cylinder in face is 3300mm；The distance between detention layer bottom surface and cylinder body bottom are 2000mm；Resistance
The distance of fluid layer outward flange and cartridge outlet is 3000mm.
9. the demister for nicotinic acids described in a kind of claim 1-8 any claims exports the operation of Synergistic structure
Method, it is characterised in that：Flue gas is entered after cylinder from demister outlet by cylinder import, and part of smoke enters detention layer,
Another part flue gas enters flue gas flow channel；
Flue gas into detention layer is collected in the presence of detention layer and gathered, and is again gone out flue gas rapid divergence by smoke hole
Go；On the one hand detention layer reduces circulation area so that the droplet carried secretly in flue gas occurs to assemble after sharp impacts, then by weight
Power effect falls to coming back in desulfurizing tower along detention layer, has on the other hand upset flow field, has rapidly changed partial fume
Flow direction；
Flue gas into flue gas flow channel is under the current balance function of stream bar, the part cigarette of the change flow direction come out again with smoke hole
Gas collects shock, while slow down this part rapid flow flue gas to the impact of cylinder inboard wall, the small liquid carried secretly in flue gas
Drip after secondary sharp impacts assemble, and along cylinder inboard wall shrink and on；By secondary sharp impacts, the drop become larger exists
Under the interception function of impermeable barrier, fall to coming back in desulfurizing tower again.
10. the demister according to claim 9 for nicotinic acids exports the operation method of Synergistic structure, its feature exists
In：Cylinder import flue gas flow rate is controlled within 4m/s, and cartridge outlet flue gas flow rate is controlled in 15m/s, inner barrel flue gas stream
Speed is between 4~15m/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710434039.8A CN107243187B (en) | 2017-06-09 | 2017-06-09 | Demister outlet synergistic structure for integration of smoke tower and operation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710434039.8A CN107243187B (en) | 2017-06-09 | 2017-06-09 | Demister outlet synergistic structure for integration of smoke tower and operation method thereof |
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| Publication Number | Publication Date |
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| CN107243187A true CN107243187A (en) | 2017-10-13 |
| CN107243187B CN107243187B (en) | 2022-09-13 |
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ID=60018085
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710434039.8A Active CN107243187B (en) | 2017-06-09 | 2017-06-09 | Demister outlet synergistic structure for integration of smoke tower and operation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109453569A (en) * | 2018-12-28 | 2019-03-12 | 启明星宇节能科技股份有限公司 | A kind of cigarette water separating system |
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| CN201257361Y (en) * | 2008-06-10 | 2009-06-17 | 卞福林 | Flue gas desulphurization device |
| CN201239582Y (en) * | 2008-07-25 | 2009-05-20 | 李继忠 | Water vapour separator |
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| CN107243187B (en) | 2022-09-13 |
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